Word of Mouth is the best, and cheapest, form of advertisement for self storage facilities .  Happy customers will tell their friends and family about the great service and pleasant staff.  Then those friends and family members will rent a unit from you, at no cost to you for advertisement.

Almost all of the self storage facilities are closed all day on Thursday or at least for part of the day for Christmas Eve.  All of the facilities are closed on Friday for Christmas.  The Canadian stores are all closed Saturday for Boxing Day.  I love the idea of having the day after Christmas as a holiday.